Alison worked on how a crack crosses the boundary between a particle and the matrix holding it, comparing phase-field, diffuse-interface and cohesive-zone descriptions of interface fracture, which disagree about exactly the case that matters. She also looked at whether a double-cantilever-beam test could supply fracture energies consistent enough to tell them apart.
So far
Compared phase-field and cohesive-zone descriptions of interface fracture, verified against a double-cantilever-beam reference.